Don't bork on link/swap the same window. Also extend comment.

CHANGES

@@ -21,6 +21,17 @@
 	tmux renamew -t/dev/ttypi:0 newname	(client /dev/ttypi's current
 						 session, window 0)
 
+  This does have some downsides, for example, having to use -t on selectw,
+
+	tmux selectw -t7
+
+  is annoying. But then using non-flagged arguments would mean renaming the
+  current window would need to be something like:
+	
+	tmux renamew : newname
+
+  It might be better not to try and be so consistent; comments to the usual
+  address ;-).
 * Infrastructure for printing arguments in list-keys output. Easy ones only for
   now.
 
@@ -429,4 +440,4 @@
   (including mutt, emacs). No status bar yet and no key remapping or other
   customisation.
 
-$Id: CHANGES,v 1.111 2008-06-05 21:24:59 nicm Exp $
+$Id: CHANGES,v 1.112 2008-06-05 22:59:38 nicm Exp $

TODO

@@ -34,7 +34,6 @@
 	command to purge window history
  	extend list-clients to list clients attached to a session (-a for all?)
 	bring back detach-session to detach all clients on a session?
-	paste buffer etc shouldn't be limited to keys
 	buffer manip: clear, view etc (clear-buffer, show-buffer)
 - function groups, bind-key ^W { select-window 0; send-key ^W } etc ***
 - allow fnmatch for -c, so that you can, eg, detach all clients

cmd-link-window.c

@@ -1,4 +1,4 @@
-/* $Id: cmd-link-window.c,v 1.19 2008-06-05 21:25:00 nicm Exp $ */
+/* $Id: cmd-link-window.c,v 1.20 2008-06-05 22:59:38 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -66,9 +66,13 @@ cmd_link_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 		return;
 	}
 
-	if (data->flags & CMD_KFLAG) {
+	if (idx != -1)
 		wl_dst = winlink_find_by_index(&s->windows, idx);
 	if (wl_dst != NULL) {
+		if (wl_dst->window == wl_src->window)
+			goto out;
+
+		if (data->flags & CMD_KFLAG) {
 			/*
 			 * Can't use session_detach as it will destroy session
 			 * if this makes it empty.
@@ -85,8 +89,8 @@ cmd_link_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 				s->lastw = NULL;
 			
 			/*
-			 * Can't error out after this or there could be an empty
+			 * Can't error out after this or there could be an
-			 * session!
+			 * empty session!
 			 */
 		}
 	}
@@ -104,6 +108,7 @@ cmd_link_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 		server_redraw_session(s);
 	}
 
+out:
 	if (ctx->cmdclient != NULL)
 		server_write_client(ctx->cmdclient, MSG_EXIT, NULL, 0);
 }

cmd-swap-window.c

@@ -1,4 +1,4 @@
-/* $Id: cmd-swap-window.c,v 1.11 2008-06-05 21:25:00 nicm Exp $ */
+/* $Id: cmd-swap-window.c,v 1.12 2008-06-05 22:59:38 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -55,6 +55,9 @@ cmd_swap_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 	if ((wl_dst = cmd_find_window(ctx, data->dst, &dst)) == NULL)
 		return;
 
+	if (wl_dst->window == wl_src->window)
+		goto out;
+
 	w = wl_dst->window;
 	wl_dst->window = wl_src->window;
 	wl_src->window = w;
@@ -68,6 +71,7 @@ cmd_swap_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 	if (src != dst)
 		server_redraw_session(dst);
 
+out:
 	if (ctx->cmdclient != NULL)
 		server_write_client(ctx->cmdclient, MSG_EXIT, NULL, 0);
 }

cmd.c

@@ -1,4 +1,4 @@
-/* $Id: cmd.c,v 1.43 2008-06-05 21:25:00 nicm Exp $ */
+/* $Id: cmd.c,v 1.44 2008-06-05 22:59:38 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -313,14 +313,15 @@ cmd_find_window(struct cmd_ctx *ctx, const char *arg, struct session **sp)
 		s = ctx->cursession;
 	if (s == NULL)
 		s = cmd_current_session(ctx);
-	if (s != NULL) {
+	if (s == NULL)
+		return (NULL);
+	if (sp != NULL)
+		*sp = s;
+
 	if (idx == -1)
 		wl = s->curw;
 	else
 		wl = winlink_find_by_index(&s->windows, idx);
-	}
-	if (sp != NULL)
-		*sp = s;
 	if (wl == NULL)
 		ctx->error(ctx, "window not found: %s:%d", s->name, idx);
 	return (wl);